John Grehan

“Large quantities of fine graphite were also used to build the chain-reaction piles at the Los Alamos atomic weapons programme and within 48 hours of the capture of the island's capital, and while the opposing forces were still fighting, arrangements were made to ship 8,000 tons of graphite from Madagascar to the USA and UK.
Little can the Japanese have realized that their failure to capture Madagascar before the Allies could intervene in 1942 would lead to the cataclysmic events at Hiroshima and Nagasaki in 1945 which brought the Second World War to such a violent and dramatic conclusion.”
― John Grehan, Churchill's Secret Invasion: Britains First Large Scale Combined Offensive 1942